Senior Data Scientist (f/m/d) at PAIR Finance

✨ The Stack take on this PAIR Finance job

• 🏢 This is PAIR Finance's only job here right now
• 🛂 Visa: EU Blue Card. Minimum salary: €50,700 a year guide
• 💡 No salary shown. Ask PAIR Finance if it is above the minimum.

Updated 2026-11-05, from our data and official sources.

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About the role

Responsibilities:
- Develop and optimize ML/AI components of our product with a strong focus on large language models (LLMs).
- Deploy, host, fine-tune and evaluate open-source LLMs for production use.
- Design and implement automation using LLMs to reduce latency and operational cost.
- Improve system performance via GPU orchestration and computational optimization techniques.
- Build and integrate backend services (Flask/FastAPI) and database interactions for ML features.
- Collaborate with data scientists, lead developers, product managers and business owners; present technical concepts and trade-offs.
- Run experiments, measure impact, and deliver projects that produce measurable business value.

Requirements:
- Degree in Data Science, Computer Science, Mathematics or related field.
- 6+ years’ experience as a Data Scientist, preferably in startups or fintech.
- Hands-on experience deploying and fine-tuning LLMs; strong prompt engineering and evaluation skills.
- Advanced Python skills and experience with Pandas, NumPy, PyTorch, scikit-learn, and transformers.
- Familiarity with web frameworks (Flask/FastAPI) and relational DBs (MySQL/PostgreSQL).
- Knowledge of cloud infra (AWS), GPU orchestration and performance optimization.
- Experience with TDD/BDD, CI, code reviews and agile development.
- Reinforcement learning experience is a plus; excellent English communication skills.

Responsibilities

Optimize innovative products using machine learning and artificial intelligence, specifically focusing on large language models. Collaborate with stakeholders to solve complex problems and deliver measurable business value through technical product concepts.

Requirements

Requires a degree in Data Science, Computer Science, or Mathematics with over 6 years of experience, ideally in fintech. Must have hands-on expertise in LLM deployment, Python, machine learning frameworks, and cloud infrastructure.

Key skills

• Large Language Models — in 46 other listings on The Stack
• Python — in 1200 other listings on The Stack
• PyTorch — in 92 other listings on The Stack
• Scikit-learn — in 26 other listings on The Stack
• Transformers — in 6 other listings on The Stack
• Pandas — in 35 other listings on The Stack
• Numpy — in 26 other listings on The Stack
• Flask — in 34 other listings on The Stack
• FastAPI
• MySQL
• PostgreSQL
• AWS
• GPU Orchestration
• Reinforcement Learning
• TDD/BDD
• Prompt Engineering

On The Stack (as of 2026-11-05)

• This is PAIR Finance's only listing on The Stack.
• 166 visa-sponsored jobs in Germany on The Stack, posted in the last 60 days.
• 68 visa-sponsored data scientist jobs in Europe on The Stack, posted in the last 60 days.

Frequently asked questions about PAIR Finance

Is this Senior Data Scientist (f/m/d) role still open?

It was posted on 2026-07-08. Listings more than 30 days old may no longer be active, so check PAIR Finance's site before applying.

Does PAIR Finance offer visa sponsorship?

This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on PAIR Finance's site.

Where is this role located?

The listing gives the location as Germany. It is marked on-site.

What skills does this role ask for?

The listing names: Large Language Models, Python, PyTorch, Scikit-learn, Transformers, Pandas, Numpy, Flask, FastAPI, MySQL, PostgreSQL, AWS, GPU Orchestration, Reinforcement Learning, TDD/BDD, Prompt Engineering.